Oil burner for tobacco drying and curing means



Dec. 22, 1953 w, B, DQWLESS 2,663,364

OIL BURNER FOR TOBACCO DRYING AND CURING MEANS Filed June 28, 1951 INVENTOR Z'ZZia mB.p0wZ@ 55 ATTORNEYS Patented Dec. 22, 1953 01L BURNER FOR TOBACCO DRYING AND CURING MEANS' William B. Dowless, Abbottsburg, N. 0. Application June 28, 1951, Serial No. 234,042

1 Claim. (01. 158-53) This invention relates to an oil burner for tobacco drying and curing means and is an improvement overthe structure shown in my Patents No. 2,223,301, dated November 26, 1940, and No. 2,444,814, dated July 6, 1948.

An object of this invention is to provide an improved burner for tobacco drying and curing means which is of simple constructionso'that it can be easily and cheaply made and will provide a minimum of parts in order that the burner will not readily get out of order.

With the above and such other objects in view, as may hereinafter more fully appear, the invention consists of the disclosed novel construction, combination and arrangement of parts, but it will be understood that changes, variations and modiflcations may be resorted to which fall within the scope of the invention, as claimed.

In the drawings:

Figure l is a detail elevation of a fuel supply tank on the exterior of the housing for a burner V of this character.

Figure 2 is a vertical sectional view taken on the center line of the burner.

Figure 3 is an enlarged sectional view taken on the line 3--3 of Figure 2.

Figure 4 is an end elevational view of the burner.

Figure 5 is a vertical section through the regulating valve on the fuel tank.

Referring to the drawings, a burner or heating means is generally designated as I I. The heating means I I includes a hot air duct I2.

The two hot air pipes I2 each have heating members I8 secured to one end thereof, the heating members I8 being of like construction, and shown in greater detail in Figures 4, 5 and 6.

Each heating member I8 is formed of upper and lower semi-cylindrical members I9 and 20 having complementary end walls 2| and 22. The semicylindrical members I9 and 20 are each provided with pairs of confronting ears 23 and 24, respectively, which are secured together by means of fastening members 25. The burner I8 is supported by means of a base structure generally designated as 26 which includes a base plate 21 and a pair of upstanding supporting plates 28 having concave seats 29 on the upper edges thereof within which the burner I8 is adapted to engage.

The lower burner member 20 is provided with an upwardly offset circular boss 30, Figure 5, and the lower side of the boss 38 is flattened as indicated at 3I. The boss 30 forms a support. or seat for a nozzle generally designated a 32. The nozzle 32 is formed of a disc-shaped bottom wall 2 33, an annular side wall 34, and a disc-shaped top wall 35. A plurality of upwardly and outwardly inclined openings 36 are formed in the side wall 34 and provide a means whereby the fuel will be directed upwardly and outwardly.

The burner head or member 32 has a nipple 31 threaded thereinto which extends through the center of the boss 38, and the lower end of the nipple 31 has one end of a fuel supply pipe 38 connected therewith. A washer or gasket 39 is interposed between the fuel connection 38 and the flat lower side 3| of the boss 30. A sealing means 40 is interposed between the bottom wall 33, and the upper side of the boss 38. The bottom wall 33 is formed adjacent the outer margin thereof with a circular bead M which provides a means whereby any oil flowing downwardly over the side wall 33 will be directed outwardly from the boss 30. As shown in Figure 5 the boss 30 is substantially smaller in diameter than the diameter of the bead M, and the outer surface of the boss 30 is formed on a concave 42 so as to guide the overflowing oil outwardly and into an annular trough or channel 43 which is formed in the lower burner member 20 about the boss 30.

A rearwardly extending trough or groove 44 communicates with the trough 43, and a drainpipe 45 communicates at one end with the trough 44, and pipe 45 is adapted to be extended to a point exteriorly of the housing I0. Air is fed into the burner I8 through an air intake pipe 46 which extends through the burner member I9 and depends over the burner head 32.

The lower end of the intake pipe 48 has a diametrically disposed tubular bar 41 fixed therein which is formed with an opening 48 within which a conical projection 49 carried by the top wall 35 of the burner head is adapted to engage. The lower burner member 20 is provided on the interior thereof with a transversely disposed and inverted V-shaped projection 50 which forms a dam to prevent any overflowing oil within the burner I8 from flowing forwardly into the hot air duct I2.

The duct or pipe 46 for conducting air through I the burner I8 includes an extension 5| which extends to a point exteriorly of the housing II]. The fuel supply pipe 38 is extended beneath the housing Ill to a point exteriorly thereof and includes a vertical riser 52 having a cup-shaped or funnel member 53. A fuel regulating valve member 54 is disposed above the cup or funnel 53 and includes a needle valve 55 having a pointer 56 secured thereto above the top wall 51 of the valve housing and the upper side of the top wall 51 as shown in Figure 7 is formed with graduations 58.

The valve member 54 is connected to a horizontally disposed pipe 59 which extends from the lower portion of a fuel supply tank 65. The tank 60 is disposed on the exterior of the housing I 0.

In the use and operation of this heating means the needle valve 55 is open so that the fuel will drip into the funnel or cup-shaped member 53 and will then gravitatingly flow to the burner head 32. Initially, thefulwill :ilow from the burner. head into the trough 43', and the fuel is lighted through an opening 6! formed in the end wall 22 of lower member 20 which is normally closed by a closure plate 62. When the burner he'ad arisesing ng the fuel will vaporize and the flames will then be directed upwardly in substantially an inverted conical configuration across the lower'erid of the air intake pipe 46. i 1 I The heat from the burner I8 will flow through the duct I2, and will then exhaust through an aprpnria e utle i aimed s; .n

bases c indrica h u ri s e at 9 end n Open at the other i rzdi a dhwsm be fa 1 f q m element r upp ra d 'o e sem i cal in er s, confronting pairs of ears carried by gaid me here, means securings'aid ears together,

answers: 'f i' t secular ba retr .byt a lower member, a fuel nozzle seated on said boss,

4 said nozzle being formed of a hollow disc-shaped body having upwardly and outwardly directed openings, said nozzle being greater in diameter than said boss and having a marginal bead extending downwardly from the bottom thereof and overhanging the boss, said lower member having an annular channel formed therein outwardly of said boss and below said nozzle, said channel beinggreater infdia'meter t an Said hozzle overflow pipe means connected to said channel, said boss being downwardly and outwardly flared to cond'uct the oil drippings from said bead to said chana"""" s"ed darhxtending transversely across the 'i'r'i'teric'ir of said lower member between said burner 15 and said open end, said dam being of a height sub- Stantial ly edual'to the height of the top of said burner, an air intake pipe extending through said upper member in alignment with said nozzle and terminating above the, latter, and a fuel supply line connected with said nozzle. W. B. DOWLESS.

References Cited the file of this patent UNITED STATES PATENTS 

